This book provides the field with a definitive, interdisciplinary, and understandable work that surveys the field of digital government in terms of key research, case studies of successful applications in a variety of government settings, along with discussions of current and future policy implications. Each chapter is prepared and carefully edited within a structured format by a known expert on the chapter topic. The editors and the authors are well-known researchers and practitioners in digital government. They have all been on the forefront of the IT and digital government research initiatives. Together the editors and expert chapter authors have developed a definitive textbook that can be used by researchers, practitioners and students across the discipline domains, of Information Systems, Information Science, Computer Science, Social Sciences, Public Policy and Business.